Use: Intermediate Jump, Park, Street Material: 6061 T6 Walls: Double Joint: Pinned Weight: 335g, 430g, 510g, 615g Diameter: 355 (18”), 406 (20”), 507 (24”), 559 (26”) Drilling: 36 Valve: AV Sidewall: ERD: 345, 395, 496, 548 Colors: Black, Blue, Red